mojo: kill app_thread before unloading main app library and add tests

mojo/shell/shell_test_base.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/shell/shell_test_base.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "net/base/filename_util.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
 #include "url/gurl.h"
 
 namespace mojo {
 namespace shell {
 namespace test {
 
 ShellTestBase::ShellTestBase() {
 }
 
 ShellTestBase::~ShellTestBase() {
 }
 
+void ShellTestBase::SetUp() {
+  test_server_.reset(new net::test_server::EmbeddedTestServer());

[viettrungluu, 2014/07/15 22:44:54]

Do we really want to do this for all tests, even ones which don't hit the
network?

+  ASSERT_TRUE(test_server_->InitializeAndWaitUntilReady());
+  base::FilePath service_dir;
+  CHECK(PathService::Get(base::DIR_MODULE, &service_dir));
+  test_server_->ServeFilesFromDirectory(service_dir);
+}
+
+ScopedMessagePipeHandle ShellTestBase::ConnectToServiceViaNetwork(
+    const GURL& application_url,
+    const std::string& service_name) {
+  shell_context_.mojo_url_resolver()->SetOrigin(
+      test_server_->base_url().spec());
+
+  return shell_context_.service_manager()->ConnectToServiceByName(
+      application_url, service_name).Pass();
+}
+
 ScopedMessagePipeHandle ShellTestBase::ConnectToService(
     const GURL& application_url,
     const std::string& service_name) {
+  // Set the MojoURLResolver origin to be the same as the base file path for
+  // local files. This is primarily for test convenience, so that references
+  // to unknown mojo: urls that do not have specific local file or custom
+  // mappings registered on the URL resolver are treated as shared libraries.
   base::FilePath service_dir;
   CHECK(PathService::Get(base::DIR_MODULE, &service_dir));
-  shell_context_.mojo_url_resolver()->set_origin(
+  shell_context_.mojo_url_resolver()->SetOrigin(
       net::FilePathToFileURL(service_dir).spec());
 
   return shell_context_.service_manager()->ConnectToServiceByName(
       application_url, service_name).Pass();
 }
 
 }  // namespace test
 }  // namespace shell
 }  // namespace mojo